Hi,
When I launch Amadeus pro I get the registration warning. I re register using both the AmadeusII code and the upgrade code and all is good. Until next time I use Amadeus and it is unregistered again!

What if you download the copy at <http://www.hairersoft.com/Downloads/AmadeusPro.zip>?
The official version performs an integrity check at launch and this may fail if you have some
software installed that modifies the resources of the program (CleanMyMac does that for
example). The version at the above link performs a weaker integrity check that does not take
resources into account, maybe this does the trick. Regards,